Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Jonathan David Greifenkamp, MD

Individual provider Cardiovascular Disease Physician · NPI 1235333808

Dr. Jonathan David Greifenkamp, MD is a Cardiovascular Disease (Cardiology) in Longview, Texas. Graduated from University of Texas Medical Branch at Galveston in 2000, 26 years ago. Practices with Regional Clinics of Longview, a 38-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
26
Trained at
University of Texas Medical Branch at Galveston
Licensed in
TX
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

709 Hollybrook Dr Ste 2301
Longview, TX 75605-2411
Phone: (903) 757-4691
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence L6919 (TX)

Record details

NPI number1235333808
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 14, 2007
Last updated in NPPESNovember 9, 2021
Certification dateNovember 9, 2021
Mailing addressPo Box 19036, Belfast, ME 04915-4085

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF TEXAS MEDICAL BRANCH AT GALVESTON
Graduated 2000 (26 years in practice)
Group practice Regional Clinics Of Longview — 38 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Longview